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/** @file
EFI speaker beep helpers routines/wrappers
Copyright (c) 2016. Disk Cryptography Services for EFI (DCS), Alex Kolotnikov
Copyright (c) 2016. VeraCrypt, Mounir IDRASSI
This program and the accompanying materials are licensed and made available
under the terms and conditions of the GNU Lesser General Public License, version 3.0 (LGPL-3.0).
The full text of the license may be found at
https://opensource.org/licenses/LGPL-3.0
**/
#include <Library/CommonLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Protocol/Speaker.h>
//////////////////////////////////////////////////////////////////////////
// Beep
//////////////////////////////////////////////////////////////////////////
EFI_HANDLE* gSpeakerHandles = NULL;
UINTN gSpeakerCount = 0;
EFI_SPEAKER_IF_PROTOCOL* gSpeaker = NULL;
EFI_GUID gSpeakerGuid = EFI_SPEAKER_INTERFACE_PROTOCOL_GUID;
// Beep defaults
int gBeepEnabled = 1;
BOOLEAN gBeepControlEnabled = 1;
int gBeepDevice = -1;
int gBeepNumberDefault = 1;
int gBeepDurationDefault = 100;
int gBeepIntervalDefault = 0;
int gBeepToneDefault = 0x500;
EFI_STATUS
InitSpeaker() {
EFI_STATUS res;
// Init Console control if supported
res = EfiGetHandles(ByProtocol, &gSpeakerGuid, 0, &gSpeakerHandles, &gSpeakerCount);
if (gSpeakerCount > 0) {
return SpeakerSelect(gSpeakerCount - 1);
}
return res;
}
EFI_STATUS
SpeakerSelect(
IN UINTN index) {
if (index < gSpeakerCount) {
return gBS->HandleProtocol(gSpeakerHandles[index], &gSpeakerGuid, (VOID**)&gSpeaker);
}
return EFI_NOT_FOUND;
}
EFI_STATUS
SpeakerBeep(
IN UINT16 Tone,
IN UINTN NumberOfBeeps,
IN UINTN Duration,
IN UINTN Interval
)
{
if (gSpeaker != NULL) {
gSpeaker->SetSpeakerToneFrequency(gSpeaker, Tone);
return gSpeaker->GenerateBeep(gSpeaker, NumberOfBeeps, Duration, Interval);
}
return EFI_UNSUPPORTED;
}
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